So, I've had my iPhone 4 for like 2-3 weeks now. It was working fine all up until last night, and still now. I always sit in my room with my iPhone. Nothing has changed. But for some reason, all of a sudden, I can't get any wifi signal in my room anymore. Or even the bathroom (closer to the router). It's so temperamental as well. Sometimes it just can't find my router at all. Sometimes it connects, disconnects, connects, disconnects. Sometimes it will connect, and then soon after it will disconnect. Sometimes it will connect, and stay connected until I, say, try loading a video, or open meebo. It only stays connected if I sit right next to my router. I've been all over the web looking for answers and tried everything. I've done all the resets on the phone. I've reset the router. I've removed all security from my router. I've changed the wifi channels. I've rebooted everything. I unplugged my cordless phones. Turned off all my other devices. You name it, I've tried it. Again, if anyone missed it, my iPhone only stays connected to wifi If I sit right next to the router. I checked my router logs, and I'm getting mac address xx:xx:xx:xx:xx:xx disconnected for reason: Received Deauthentication I have a dlink dir 625 My dad has an iphone 3. That works fine. I have a 4. Like I said, It was fine all up until last night. So I duno what's going on here. Any ideas?